/*
 *    Copyright (c) 2009-2017 Dave Gamble and cJSON contributors
 *
 *    Permission is hereby granted, free of charge, to any person obtaining a
 *   copy
 *    of this software and associated documentation files (the "Software"), to
 *   deal
 *    in the Software without restriction, including without limitation the
 *   rights
 *    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *    copies of the Software, and to permit persons to whom the Software is
 *    furnished to do so, subject to the following conditions:
 *
 *    The above copyright notice and this permission notice shall be included in
 *    all copies or substantial portions of the Software.
 *
 *    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 *   THE
 *    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *   FROM,
 *    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *    THE SOFTWARE.
 */

#ifndef cJSON__h
#define cJSON__h

#ifdef __cplusplus
extern "C"
{
#endif

#if !defined(__WINDOWS__) && (defined(WIN32) || defined(WIN64) \
  || defined(_MSC_VER) || defined(_WIN32))
#define __WINDOWS__
#endif

#ifdef __WINDOWS__

/* When compiling for windows, we specify a specific calling convention to avoid
 *   issues where we are being called from a project with a different default
 *   calling convention.  For windows you have 3 define options:
 *
 *    CJSON_HIDE_SYMBOLS - Define this in the case where you don't want to ever
 *   dllexport symbols
 *    CJSON_EXPORT_SYMBOLS - Define this on library build when you want to
 *   dllexport symbols (default)
 *    CJSON_IMPORT_SYMBOLS - Define this if you want to dllimport symbol
 *
 *    For *nix builds that support visibility attribute, you can define similar
 *   behavior by
 *
 *    setting default visibility to hidden by adding
 *    -fvisibility=hidden (for gcc)
 *    or
 *    -xldscope=hidden (for sun cc)
 *    to CFLAGS
 *
 *    then using the CJSON_API_VISIBILITY flag to "export" the same symbols the
 *   way CJSON_EXPORT_SYMBOLS does
 *
 */

#define CJSON_CDECL   __cdecl
#define CJSON_STDCALL __stdcall

/* export symbols by default, this is necessary for copy pasting the C and
 *   header file */
#if !defined(CJSON_HIDE_SYMBOLS) && !defined(CJSON_IMPORT_SYMBOLS) \
  && !defined(CJSON_EXPORT_SYMBOLS)
#define CJSON_EXPORT_SYMBOLS
#endif

#if defined(CJSON_HIDE_SYMBOLS)
#define CJSON_PUBLIC(type)   type CJSON_STDCALL
#elif defined(CJSON_EXPORT_SYMBOLS)
#define CJSON_PUBLIC(type)   __declspec(dllexport) type CJSON_STDCALL
#elif defined(CJSON_IMPORT_SYMBOLS)
#define CJSON_PUBLIC(type)   __declspec(dllimport) type CJSON_STDCALL
#endif
#else /* !__WINDOWS__ */
#define CJSON_CDECL
#define CJSON_STDCALL

#if (defined(__GNUC__) || defined(__SUNPRO_CC) || defined (__SUNPRO_C)) \
  && defined(CJSON_API_VISIBILITY)
#define CJSON_PUBLIC(type)   __attribute__((visibility("default"))) type
#else
#define CJSON_PUBLIC(type)   type
#endif
#endif

/* project version */
#define CJSON_VERSION_MAJOR 1
#define CJSON_VERSION_MINOR 7
#define CJSON_VERSION_PATCH 12

#include <stddef.h>

/* cJSON Types: */
#define cJSON_Invalid       (0)
#define cJSON_False         (1 << 0)
#define cJSON_True          (1 << 1)
#define cJSON_NULL          (1 << 2)
#define cJSON_Number        (1 << 3)
#define cJSON_String        (1 << 4)
#define cJSON_Array         (1 << 5)
#define cJSON_Object        (1 << 6)
#define cJSON_Raw           (1 << 7) /* raw json */

#define cJSON_IsReference   256
#define cJSON_StringIsConst 512

/* The cJSON structure: */
typedef struct cJSON
{
  /* next/prev allow you to walk array/object chains. Alternatively, use
   *   GetArraySize/GetArrayItem/GetObjectItem */
  struct cJSON *next;
  struct cJSON *prev;

  /* An array or object item will have a child pointer pointing to a chain of
   *   the items in the array/object. */
  struct cJSON *child;

  /* The type of the item, as above. */
  int type;

  /* The item's string, if type==cJSON_String  and type == cJSON_Raw */
  char *valuestring;

  /* writing to valueint is DEPRECATED, use cJSON_SetNumberValue instead */
  int valueint;

  /* The item's number, if type==cJSON_Number */
  double valuedouble;

  /* The item's name string, if this item is the child of, or is in the list of
   *   subitems of an object. */
  char *string;
} cJSON;

typedef struct cJSON_Hooks
{
  /* malloc/free are CDECL on Windows regardless of the default calling
   *   convention of the compiler, so ensure the hooks allow passing those
   *   functions directly. */
  void *(CJSON_CDECL * malloc_fn)(size_t sz);
  void(CJSON_CDECL * free_fn)(void *ptr);
} cJSON_Hooks;

typedef int cJSON_bool;

/* Limits how deeply nested arrays/objects can be before cJSON rejects to parse
 *   them.
 * This is to prevent stack overflows. */
#ifndef CJSON_NESTING_LIMIT
#define CJSON_NESTING_LIMIT 1000
#endif

/* returns the version of cJSON as a string */
CJSON_PUBLIC(const char *) cJSON_Version(void);

/* Supply malloc, realloc and free functions to cJSON */
CJSON_PUBLIC(void) cJSON_InitHooks(cJSON_Hooks * hooks);

/* Memory Management: the caller is always responsible to free the results from
 *   all variants of cJSON_Parse (with cJSON_Delete) and cJSON_Print (with
 *   stdlib free, cJSON_Hooks.free_fn, or cJSON_free as appropriate). The
 *   exception is cJSON_PrintPreallocated, where the caller has full
 *   responsibility of the buffer. */
/* Supply a block of JSON, and this returns a cJSON object you can interrogate.
 */
CJSON_PUBLIC(cJSON *) cJSON_Parse(const char *value);

/* ParseWithOpts allows you to require (and check) that the JSON is null
 *   terminated, and to retrieve the pointer to the final byte parsed.
 */
/* If you supply a ptr in return_parse_end and parsing fails, then
 *   return_parse_end will contain a pointer to the error so will match
 *   cJSON_GetErrorPtr(). */
CJSON_PUBLIC(cJSON *) cJSON_ParseWithOpts(const char *value,
                                          const char **return_parse_end,
                                          cJSON_bool require_null_terminated);

/* Render a cJSON entity to text for transfer/storage. */
CJSON_PUBLIC(char *) cJSON_Print(const cJSON * item);

/* Render a cJSON entity to text for transfer/storage without any formatting. */
CJSON_PUBLIC(char *) cJSON_PrintUnformatted(const cJSON * item);

/* Render a cJSON entity to text using a buffered strategy. prebuffer is a guess
 *   at the final size. guessing well reduces reallocation. fmt=0 gives
 *   unformatted, =1 gives formatted */
CJSON_PUBLIC(char *) cJSON_PrintBuffered(const cJSON * item,
                                         int prebuffer,
                                         cJSON_bool fmt);

/* Render a cJSON entity to text using a buffer already allocated in memory with
 *   given length. Returns 1 on success and 0 on failure. */
/* NOTE: cJSON is not always 100% accurate in estimating how much memory it will
 *   use, so to be safe allocate 5 bytes more than you actually need */
CJSON_PUBLIC(cJSON_bool) cJSON_PrintPreallocated(cJSON * item,
                                                 char *buffer,
                                                 const int length,
                                                 const cJSON_bool format);

/* Delete a cJSON entity and all subentities. */
CJSON_PUBLIC(void) cJSON_Delete(cJSON * item);

/* Returns the number of items in an array (or object). */
CJSON_PUBLIC(int) cJSON_GetArraySize(const cJSON * array);

/* Retrieve item number "index" from array "array". Returns NULL if
 *   unsuccessful. */
CJSON_PUBLIC(cJSON *) cJSON_GetArrayItem(const cJSON * array, int index);

/* Get item "string" from object. Case insensitive. */
CJSON_PUBLIC(cJSON *) cJSON_GetObjectItem(const cJSON * const object,
                                          const char * const string);
CJSON_PUBLIC(cJSON *) cJSON_GetObjectItemCaseSensitive(
  const cJSON * const object,
  const char * const string);
CJSON_PUBLIC(cJSON_bool) cJSON_HasObjectItem(const cJSON * object,
                                             const char *string);

/* For analysing failed parses. This returns a pointer to the parse error.
 *   You'll probably need to look a few chars back to make sense of it. Defined
 *   when cJSON_Parse() returns 0. 0 when cJSON_Parse() succeeds. */
CJSON_PUBLIC(const char *) cJSON_GetErrorPtr(void);

/* Check if the item is a string and return its valuestring */
CJSON_PUBLIC(char *) cJSON_GetStringValue(cJSON * item);

/* These functions check the type of an item */
CJSON_PUBLIC(cJSON_bool) cJSON_IsInvalid(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsFalse(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsTrue(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsBool(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsNull(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsNumber(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsString(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsArray(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsObject(const cJSON * const item);
CJSON_PUBLIC(cJSON_bool) cJSON_IsRaw(const cJSON * const item);

/* These calls create a cJSON item of the appropriate type. */
CJSON_PUBLIC(cJSON *) cJSON_CreateNull(void);
CJSON_PUBLIC(cJSON *) cJSON_CreateTrue(void);
CJSON_PUBLIC(cJSON *) cJSON_CreateFalse(void);
CJSON_PUBLIC(cJSON *) cJSON_CreateBool(cJSON_bool boolean);
CJSON_PUBLIC(cJSON *) cJSON_CreateNumber(double num);
CJSON_PUBLIC(cJSON *) cJSON_CreateString(const char *string);

/* raw json */
CJSON_PUBLIC(cJSON *) cJSON_CreateRaw(const char *raw);
CJSON_PUBLIC(cJSON *) cJSON_CreateArray(void);
CJSON_PUBLIC(cJSON *) cJSON_CreateObject(void);

/* Create a string where valuestring references a string so
 * it will not be freed by cJSON_Delete */
CJSON_PUBLIC(cJSON *) cJSON_CreateStringReference(const char *string);

/* Create an object/array that only references it's elements so
 * they will not be freed by cJSON_Delete */
CJSON_PUBLIC(cJSON *) cJSON_CreateObjectReference(const cJSON * child);
CJSON_PUBLIC(cJSON *) cJSON_CreateArrayReference(const cJSON * child);

/* These utilities create an Array of count items. */
CJSON_PUBLIC(cJSON *) cJSON_CreateIntArray(const int *numbers, int count);
CJSON_PUBLIC(cJSON *) cJSON_CreateFloatArray(const float *numbers, int count);
CJSON_PUBLIC(cJSON *) cJSON_CreateDoubleArray(const double *numbers, int count);
CJSON_PUBLIC(cJSON *) cJSON_CreateStringArray(const char **strings, int count);

/* Append item to the specified array/object. */
CJSON_PUBLIC(void) cJSON_AddItemToArray(cJSON * array, cJSON * item);
CJSON_PUBLIC(void) cJSON_AddItemToObject(cJSON * object,
                                         const char *string,
                                         cJSON * item);

/* Use this when string is definitely const (i.e. a literal, or as good as), and
 *   will definitely survive the cJSON object.
 * WARNING: When this function was used, make sure to always check that
 *   (item->type & cJSON_StringIsConst) is zero before
 * writing to `item->string` */
CJSON_PUBLIC(void) cJSON_AddItemToObjectCS(cJSON * object,
                                           const char *string,
                                           cJSON * item);

/* Append reference to item to the specified array/object. Use this when you
 *   want to add an existing cJSON to a new cJSON, but don't want to corrupt
 *   your existing cJSON. */
CJSON_PUBLIC(void) cJSON_AddItemReferenceToArray(cJSON * array, cJSON * item);
CJSON_PUBLIC(void) cJSON_AddItemReferenceToObject(cJSON * object,
                                                  const char *string,
                                                  cJSON * item);

/* Remove/Detach items from Arrays/Objects. */
CJSON_PUBLIC(cJSON *) cJSON_DetachItemViaPointer(cJSON * parent,
                                                 cJSON * const item);
CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromArray(cJSON * array, int which);
CJSON_PUBLIC(void) cJSON_DeleteItemFromArray(cJSON * array, int which);
CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObject(cJSON * object,
                                                 const char *string);
CJSON_PUBLIC(cJSON *) cJSON_DetachItemFromObjectCaseSensitive(cJSON * object,
                                                              const char *string);
CJSON_PUBLIC(void) cJSON_DeleteItemFromObject(cJSON * object,
                                              const char *string);
CJSON_PUBLIC(void) cJSON_DeleteItemFromObjectCaseSensitive(cJSON * object,
                                                           const char *string);

/* Update array items. */
CJSON_PUBLIC(void) cJSON_InsertItemInArray(cJSON * array,
                                           int which,
                                           cJSON * newitem);   /*
                                                                *   Shifts
                                                                *   pre-existing
                                                                *   items to
                                                                *   the right.
                                                                */
CJSON_PUBLIC(cJSON_bool) cJSON_ReplaceItemViaPointer(cJSON * const parent,
                                                     cJSON * const item,
                                                     cJSON * replacement);
CJSON_PUBLIC(void) cJSON_ReplaceItemInArray(cJSON * array,
                                            int which,
                                            cJSON * newitem);
CJSON_PUBLIC(void) cJSON_ReplaceItemInObject(cJSON * object,
                                             const char *string,
                                             cJSON * newitem);
CJSON_PUBLIC(void) cJSON_ReplaceItemInObjectCaseSensitive(cJSON * object,
                                                          const char *string,
                                                          cJSON * newitem);

/* Duplicate a cJSON item */
CJSON_PUBLIC(cJSON *) cJSON_Duplicate(const cJSON * item, cJSON_bool recurse);

/* Duplicate will create a new, identical cJSON item to the one you pass, in new
 *   memory that will
 *    need to be released. With recurse!=0, it will duplicate any children
 *   connected to the item.
 *    The item->next and ->prev pointers are always zero on return from
 *   Duplicate. */
/* Recursively compare two cJSON items for equality. If either a or b is NULL or
 *   invalid, they will be considered unequal.
 * case_sensitive determines if object keys are treated case sensitive (1) or
 *   case insensitive (0) */
CJSON_PUBLIC(cJSON_bool) cJSON_Compare(const cJSON * const a,
                                       const cJSON * const b,
                                       const cJSON_bool case_sensitive);

/* Minify a strings, remove blank characters(such as ' ', '\t', '\r', '\n') from
 *   strings */

/* The input pointer json cannot point to a read-only address area, such as a
 *   string constant,
 * but should point to a readable and writable adress area. */
CJSON_PUBLIC(void) cJSON_Minify(char *json);

/* Helper functions for creating and adding items to an object at the same time.
 * They return the added item or NULL on failure. */
CJSON_PUBLIC(cJSON *) cJSON_AddNullToObject(cJSON * const object,
                                            const char * const name);
CJSON_PUBLIC(cJSON *) cJSON_AddTrueToObject(cJSON * const object,
                                            const char * const name);
CJSON_PUBLIC(cJSON *) cJSON_AddFalseToObject(cJSON * const object,
                                             const char * const name);
CJSON_PUBLIC(cJSON *) cJSON_AddBoolToObject(cJSON * const object,
                                            const char * const name,
                                            const cJSON_bool boolean);
CJSON_PUBLIC(cJSON *) cJSON_AddNumberToObject(cJSON * const object,
                                              const char * const name,
                                              const double number);
CJSON_PUBLIC(cJSON *) cJSON_AddStringToObject(cJSON * const object,
                                              const char * const name,
                                              const char * const string);
CJSON_PUBLIC(cJSON *) cJSON_AddRawToObject(cJSON * const object,
                                           const char * const name,
                                           const char * const raw);
CJSON_PUBLIC(cJSON *) cJSON_AddObjectToObject(cJSON * const object,
                                              const char * const name);
CJSON_PUBLIC(cJSON *) cJSON_AddArrayToObject(cJSON * const object,
                                             const char * const name);

/* When assigning an integer value, it needs to be propagated to valuedouble
 *   too. */
#define cJSON_SetIntValue(object, number) \
  ((object) ? (object)->valueint = (object)->valuedouble = (number) : (number))

/* helper for the cJSON_SetNumberValue macro */
CJSON_PUBLIC(double) cJSON_SetNumberHelper(cJSON * object, double number);
#define cJSON_SetNumberValue(object, number) \
  ((object != NULL) ? cJSON_SetNumberHelper(object, (double)number) : (number))

/* Macro for iterating over an array or object */
#define cJSON_ArrayForEach(element, array)                \
  for (element = (array != NULL) ? (array)->child : NULL; \
       element != NULL; element = element->next)

/* malloc/free objects using the malloc/free functions that have been set with
 *   cJSON_InitHooks */
CJSON_PUBLIC(void *) cJSON_malloc(size_t size);
CJSON_PUBLIC(void) cJSON_free(void *object);

#ifdef __cplusplus
}
#endif

#endif
